Fixed for breaking change in opauth/opauth 0.4.5.

Controller/OpauthAppController.php

@@ -54,10 +54,10 @@ public function callback(){
 				}
 				break;
 			case 'post':
-				$response = unserialize(base64_decode( $_POST['opauth'] ));
+				$response = json_decode(base64_decode( $_POST['opauth']), true);
 				break;
 			case 'get':
-				$response = unserialize(base64_decode( $_GET['opauth'] ));
+				$response = json_decode(base64_decode( $_GET['opauth']), true);
 				break;
 			default:
 				echo '<strong style="color: red;">Error: </strong>Unsupported callback_transport.'."<br>\n";
@@ -138,4 +138,4 @@ protected function _loadOpauth($config = null, $run = false){
 		App::import('Vendor', 'Opauth.Opauth/lib/Opauth/Opauth');
 		$this->Opauth = new Opauth( $config, $run );
 	}
-}
+}

composer.json

@@ -0,0 +1,23 @@
+{
+	"name": "uzyn/cakephp-opauth",
+	"description": "Opauth plugin for CakePHP v2.x, allowing simple plug-n-play 3rd-party authentication with CakePHP",
+	"type": "cakephp-plugin",
+	"keywords": ["cakephp", "opauth", "authentication", "auth", "oauth"],
+	"homepage": "http://opauth.org",
+	"license": "MIT",
+	"authors": [
+		{
+			"name": "U-Zyn Chua",
+			"email": "[email protected]",
+			"homepage": "http://uzyn.com"
+		}
+	],
+	"require": {
+		"php": ">=5.2.0",
+		"composer/installers": "1.*",
+		"opauth/opauth": ">=0.2.0"
+	},
+	"extra": {
+	    "installer-name": "Opauth"
+    }
+}